Cisco Systems OL-12811-01 Manual de usuario descargar pdf (Pagina 11)

Connecting Cisco ISDN PRI Network Modules to the Network

PRI Module LEDs

Connecting Cisco ISDN PRI Network Modules to the Network

Connecting CE1/PRI-U Modules to the Network

To connect a CE1/PRI-U (75-ohm) module to the network, use the appropriate cable to connect the

CE1/PRI-U port to an E1 CSU (see Figure 18). These ports are color-coded tan. The illustration shows

a CSU with BNC connectors.

Figure 18 Connecting a CE1/PRI-U Module to an E1 CSU

(DB-15-to-BNC Connectors)

PRI Module LEDs

All network modules have an enable (EN) LED. This LED indicates that the module has passed its

self-tests and is available to the router.

All PRI modules display four additional LEDs for each port. These LEDs are described in Table 4.

Channelized T1/E1 PRI Network Module with G.703 LEDs

Figure 19 and Figure 20 show channelized T1/E1 PRI network module with G.703 LEDs. See Table 5

for LED definitions.

For LEDs found on all PRI network modules, see Table 4.

LOOP

BACK

FE-PRI

1FE-1CE1-B/U

LOCAL

ALARM

REMOTE

ALARM

CARRIER

DETECT

10/100BaseT

COLL

LINK

100Mbps

FDX

H7471

CE1/PRI-U

BNC connectors

E1 CSU

E1 cable for 75-ohm

unbalanced connections

with BNC connectors

at the network end

CTRLR 0

Table 4 ISDN PRI Network Module LEDs

LED Meaning

RA Local alarm at remote end of connection

LA Loss of signal, loss of frame, or unavailability because of

excessive errors

LP Loopback mode

CD Carrier received on telco link

1 2 ... 6 7 8 9 10 11 12 13 14 15 16

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